My ShareSpace - 4x1Tb - got bricked by repeated power failures. I have retrieved my data (thanks to a friend and some community help). Unfortunately my system partition (MD0) got lost.
I have used the R-Studio for retrieving my data.
Afterwards wrote some 0000 at the start of each HDD (as per the advice of the community).
Placing the drives back in the ShareSpace box and powering it up it mounted the in-build flash with the firmware and stated rebuilding the SS-Box as per the factory defaults (as if just taken out of the box). Its going to take some long hours (say 40-50 hours) but hopefully this will be the end of my misery.
Be safe and back-up all your valuable data!